LR431ATLT1G

{
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  "type": "component",
  "slug": "lr431atlt1g",
  "title": "LR431ATLT1G",
  "brief": "LRC Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
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  "component": {
    "mpn": "LR431ATLT1G",
    "manufacturer": "LRC",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Reference",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/6c408590b9d1279e68bc9d93e40e376f.pdf",
    "parts": {
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      "model_3d_step_plain": "lr431atlt1g.step",
      "lbr": "lr431atlt1g.lbr"
    },
    "distributor_links": {
      "lcsc": "C79252"
    },
    "pins": [
      {
        "number": "1",
        "name": "REF",
        "type": "input",
        "description": "Reference input. Sense pin compared internally to the 2.495 V bandgap reference; drives the internal amplifier that controls the cathode shunt current. Typical reference input current 1.5 µA (Iref)."
      },
      {
        "number": "2",
        "name": "K",
        "type": "passive",
        "description": "Cathode. Shunt-regulator output terminal; sinks 1-100 mA in regulation with Vka ranging from Vref (~2.495 V) up to 36 V max. Off-state cathode current is 0.05 µA typ at Vka = 36 V, Vref = 0."
      },
      {
        "number": "3",
        "name": "A",
        "type": "passive",
        "description": "Anode. Reference-side ground return for the shunt element; connects to the low side of the load and to the R1/R2 divider common node."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/6c408590b9d1279e68bc9d93e40e376f.pdf",
        "pages": 5,
        "sha256": "889e59d6aba7b3a0",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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    "pin1": {
      "pad": "1",
      "at": [
        -0.9375,
        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23@sha256:0d88c86c1b6d8c1a",
      "mark": "drawn"
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        "checked": "2026-10-07",
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        "checked": "2026-10-07",
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    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "LRC",
      "Package": "SOT-23",
      "Category": "PMIC",
      "Pins": "3"
    },
    "characteristics": {
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      "rows": [
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          "name": "Operating ambient temperature range",
          "symbol": "",
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          "conditions": "",
          "source_page": 2,
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  "discovery_pitch": "LR431ATLT1G (LRC) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
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  "variants": [
    {
      "mpn": "LR431ATLT1G",
      "kind": "packaging"
    },
    {
      "mpn": "LR431BTLT1G",
      "kind": "unknown"
    },
    {
      "mpn": "LR431APTLT1G",
      "kind": "unknown"
    },
    {
      "mpn": "LR431BPTLT1G",
      "kind": "unknown"
    },
    {
      "mpn": "LR431ALT1G",
      "kind": "unknown"
    },
    {
      "mpn": "LR431BLT1G",
      "kind": "unknown"
    },
    {
      "mpn": "LR431APLT1G",
      "kind": "unknown"
    },
    {
      "mpn": "LR431BPLT1G",
      "kind": "unknown"
    }
  ],
  "updated_at": "2026-09-28T18:04:43.863Z"
}